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将关联集映射到存储过程（实体框架）

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AssociationSetMapping 内的 ModificationFunctionMapping 元素指定在实体框架中插入和删除实体之间的关联实例的存储过程。当映射多对多关联（数据库中的链接表通常支持这种关联）时，AssociationSetMapping 中的 ModificationFunctionMapping 会十分有用。

当映射外键关系（如 AdventureWorks 示例数据库中的 SalesOrderDetail 与 SalesOrderHeader 之间的关系）时，可在 ModificationFunctionMappingEntityTypeMapping 中使用 AssociationEnd 绑定技术。有关更多信息，请参见存储过程支持（实体框架）。

AssociationSetMapping 中的顶级元素为 ModificationFunctionMapping 元素。DeleteFunction 和 InsertFunction 子元素描述关联两端的参数绑定。

DeleteFunction 和 InsertFunction 的 FunctionName 属性是它们各自在存储模型中引用的存储过程的名称。

Note注意

关联集不存在 UpdateFunction 元素，原因是关联不可修改，只可创建或删除。

在关联集的存储过程映射中声明的 EndProperty 绑定类似于在 EntitySetMapping 中声明的 AssociationEnd 元素，但是这些绑定需要的上下文较少，因为父元素指示的是 AssociationSet。ScalarProperty 子元素描述关联两端的键值与存储过程的对应参数的参数绑定。

下面的示例映射插入和删除函数，这些函数在支持 Contact_Address 关联的多对多链接表中创建和删除项。

  <AssociationSetMapping Name="Contact_Address"
                TypeName="ContactInformationModel.Contact_Address"
                StoreEntitySet="Contact_Address">
    <EndProperty Name="Address">
      <ScalarProperty Name="AddressID" ColumnName="AddressID" />
    </EndProperty>
    <EndProperty Name="Contact">
      <ScalarProperty Name="ContactID" ColumnName="ContactID" />
    </EndProperty>
    <ModificationFunctionMapping>
      <DeleteFunction
        FunctionName="ContactInformationModel.Store.DeleteAddress">
        <EndProperty Name="Address">
          <ScalarProperty Name="AddressID" ParameterName="AddressID"/>
        </EndProperty>
        <EndProperty Name="Contact">
          <ScalarProperty Name="ContactID" ParameterName="ContactID"/>
        </EndProperty>
      </DeleteFunction>
      <InsertFunction
        FunctionName="ContactInformationModel.Store.SetAddress">
        <EndProperty Name="Address">
          <ScalarProperty Name="AddressID" ParameterName="AddressID"/>
        </EndProperty>
        <EndProperty Name="Contact">
          <ScalarProperty Name="ContactID" ParameterName="ContactID"/>
        </EndProperty>
      </InsertFunction>
    </ModificationFunctionMappi

若要创建此示例中使用的数据库，请运行下面的脚本。

USE [master]
GO
CREATE DATABASE [ContactInformation]
GO
USE [ContactInformation]
GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[Address]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[Address](
    [AddressID] [int] NOT NULL,
    [StreetAddress] [nvarchar](50) NOT NULL,
    [City] [nvarchar](50) NOT NULL,
 CONSTRAINT [PK_Address] PRIMARY KEY CLUSTERED 
(
[AddressID] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
END
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[Contact]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[Contact](
    [ContactID] [int] NOT NULL,
    [LastName] [nvarchar](50) NOT NULL,
    [FirstName] [nvarchar](50) NOT NULL,
 CONSTRAINT [PK_Contact] PRIMARY KEY CLUSTERED 
(
    [ContactID] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
END
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[Contact_Address]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[Contact_Address](
    [ContactID] [int] NOT NULL,
    [AddressID] [int] NOT NULL
) ON [PRIMARY]
END
GO
IF NOT EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id = OBJECT_ID(N'[dbo].[FK_Address]') AND parent_object_id = OBJECT_ID(N'[dbo].[Contact_Address]'))
ALTER TABLE [dbo].[Contact_Address]  WITH CHECK ADD  CONSTRAINT [FK_Address] FOREIGN KEY([AddressID])
REFERENCES [dbo].[Address] ([AddressID])
GO
ALTER TABLE [dbo].[Contact_Address] CHECK CONSTRAINT [FK_Address]
GO
IF NOT EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id = OBJECT_ID(N'[dbo].[FK_Contact]') AND parent_object_id = OBJECT_ID(N'[dbo].[Contact_Address]'))
ALTER TABLE [dbo].[Contact_Address]  WITH CHECK ADD  CONSTRAINT [FK_Contact] FOREIGN KEY([ContactID])
REFERENCES [dbo].[Contact] ([ContactID])
GO
ALTER TABLE [dbo].[Contact_Address] CHECK CONSTRAINT [FK_Contact]

若要创建此示例中使用的存储过程，请运行下面的脚本。

使用下面的脚本可创建用于创建关联实例的函数：

USE [ContactInformation]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF OBJECT_ID ( 'dbo.SetAddress', 'P' ) IS NOT NULL 
    DROP PROCEDURE dbo.SetAddress;
GO

CREATE PROCEDURE [dbo].[SetAddress] 
    @ContactID int,
    @AddressID int
AS
INSERT Contact_Address(ContactID, AddressID)
  VALUES(@ContactID, @AddressID)

使用下面的脚本可创建用于删除关联实例的函数：

USE [ContactInformation]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF OBJECT_ID ( 'dbo.DeleteAddress', 'P' ) IS NOT NULL 
    DROP PROCEDURE dbo.DeleteAddress;
GO

CREATE PROCEDURE [dbo].[DeleteAddress] 
    @ContactID int,
    @AddressID int
AS

Delete Contact_Address
  WHERE ContactID = @ContactID 
  AND AddressID = @AddressID

下面演示的完整 .edmx 架构已经过手动修改，实现了 AssociationSetMapping 和 ModificationFunctionMapping。实体框架设计器工具不支持 ModificationFunctionMapping 的 AssociationSetMapping 的实现。

<?xml version="1.0" encoding="utf-8"?>
<edmx:Edmx Version="1.0"
           xmlns:edmx="https://schemas.microsoft.com/ado/2007/06/edmx">
  <edmx:Runtime>
    <!-- SSDL content -->
    <edmx:StorageModels>
      <Schema Namespace="ContactInformationModel.Store" Alias="Self"
           Provider="System.Data.SqlClient" ProviderManifestToken="2005"
           xmlns:store="https://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator"
           xmlns="https://schemas.microsoft.com/ado/2006/04/edm/ssdl">
        <EntityContainer Name="dbo">
          <EntitySet Name="Address"
                     EntityType="ContactInformationModel.Store.Address"
                     store:Type="Tables" />
          <EntitySet Name="Contact"
                     EntityType="ContactInformationModel.Store.Contact"
                     store:Type="Tables" />
          <EntitySet Name="Contact_Address"
                     EntityType="ContactInformationModel.Store.Contact_Address"
                     store:Type="Tables" store:Schema="dbo" 
                           store:Name="Contact_Address">
            <DefiningQuery>
              SELECT
              [Contact_Address].[ContactID] AS [ContactID],
              [Contact_Address].[AddressID] AS [AddressID]
              FROM [dbo].[Contact_Address] AS [Contact_Address]
            </DefiningQuery>
          </EntitySet>
          <AssociationSet Name="FK_Address"
                          Association="ContactInformationModel.Store.FK_Address">
            <End Role="Address" EntitySet="Address" />
            <End Role="Contact_Address" EntitySet="Contact_Address" />
          </AssociationSet>
          <AssociationSet Name="FK_Contact"
                          Association="ContactInformationModel.Store.FK_Contact">
            <End Role="Contact" EntitySet="Contact" />
            <End Role="Contact_Address" EntitySet="Contact_Address" />
          </AssociationSet>
        </EntityContainer>
        <EntityType Name="Address">
          <Key>
            <PropertyRef Name="AddressID" />
          </Key>
          <Property Name="AddressID" Type="int" Nullable="false" />
          <Property Name="StreetAddress" Type="nvarchar"
                    Nullable="false" MaxLength="50" />
          <Property Name="City" Type="nvarchar"
                    Nullable="false" MaxLength="50" />
        </EntityType>
        <EntityType Name="Contact">
          <Key>
            <PropertyRef Name="ContactID" />
          </Key>
          <Property Name="ContactID" Type="int" Nullable="false" />
          <Property Name="LastName" Type="nvarchar"
                    Nullable="false" MaxLength="50" />
          <Property Name="FirstName" Type="nvarchar"
                    Nullable="false" MaxLength="50" />
        </EntityType>

        <EntityType Name="Contact_Address">
          <Key>
            <PropertyRef Name="ContactID" />
            <PropertyRef Name="AddressID" />
          </Key>
          <Property Name="ContactID" Type="int" Nullable="false" />
          <Property Name="AddressID" Type="int" Nullable="false" />
        </EntityType>
        <Association Name="FK_Address">
          <End Role="Address"
                   Type="ContactInformationModel.Store.Address"
               Multiplicity="1" />
          <End Role="Contact_Address"
               Type="ContactInformationModel.Store.Contact_Address"
               Multiplicity="*" />
          <ReferentialConstraint>
            <Principal Role="Address">
              <PropertyRef Name="AddressID" />
            </Principal>
            <Dependent Role="Contact_Address">
              <PropertyRef Name="AddressID" />
            </Dependent>
          </ReferentialConstraint>
        </Association>
        <Association Name="FK_Contact">
          <End Role="Contact"
                   Type="ContactInformationModel.Store.Contact"
               Multiplicity="1" />
          <End Role="Contact_Address"
               Type="ContactInformationModel.Store.Contact_Address"
               Multiplicity="*" />
          <ReferentialConstraint>
            <Principal Role="Contact">
              <PropertyRef Name="ContactID" />
            </Principal>
            <Dependent Role="Contact_Address">
              <PropertyRef Name="ContactID" />
            </Dependent>
          </ReferentialConstraint>
        </Association>
        <Function Name="DeleteAddress" 
                            Aggregate="false" BuiltIn="false"
                  NiladicFunction="false" IsComposable="false"
                  ParameterTypeSemantics="AllowImplicitConversion" Schema="dbo">
          <Parameter Name="ContactID" Type="int" Mode="In" />
          <Parameter Name="AddressID" Type="int" Mode="In" />
        </Function>
        <Function Name="SetAddress" Aggregate="false" BuiltIn="false"
                  NiladicFunction="false" IsComposable="false"
                  ParameterTypeSemantics="AllowImplicitConversion"
                                                        Schema="dbo">
          <Parameter Name="ContactID" Type="int" Mode="In" />
          <Parameter Name="AddressID" Type="int" Mode="In" />
        </Function>
      </Schema>
    </edmx:StorageModels>
    <!-- CSDL content -->
    <edmx:ConceptualModels>
      <Schema Namespace="ContactInformationModel" Alias="Self"
              xmlns="https://schemas.microsoft.com/ado/2006/04/edm">
        <EntityContainer Name="ContactInformationEntities">
          <EntitySet Name="Addresses"
                     EntityType="ContactInformationModel.Address" />
          <EntitySet Name="Contacts"
                     EntityType="ContactInformationModel.Contact" />
          <AssociationSet Name="Contact_Address"
            Association="ContactInformationModel.Contact_Address">
            <End Role="Address" EntitySet="Addresses" />
            <End Role="Contact" EntitySet="Contacts" />
          </AssociationSet>
        </EntityContainer>
        <EntityType Name="Address">
          <Key>
            <PropertyRef Name="AddressID" />
          </Key>
          <Property Name="AddressID" Type="Int32" Nullable="false" />
          <Property Name="StreetAddress" Type="String" Nullable="false"
                    MaxLength="50" Unicode="true" FixedLength="false" />
          <Property Name="City" Type="String" Nullable="false"
                    MaxLength="50" Unicode="true" FixedLength="false" />
          <NavigationProperty Name="Contact"
            Relationship="ContactInformationModel.Contact_Address"
                    FromRole="Address" ToRole="Contact" />
        </EntityType>
        <EntityType Name="Contact">
          <Key>
            <PropertyRef Name="ContactID" />
          </Key>
          <Property Name="ContactID" Type="Int32" Nullable="false" />
          <Property Name="LastName" Type="String" Nullable="false"
                    MaxLength="50" Unicode="true" FixedLength="false" />
          <Property Name="FirstName" Type="String" Nullable="false"
                    MaxLength="50" Unicode="true" FixedLength="false" />
          <NavigationProperty Name="Address"
             Relationship="ContactInformationModel.Contact_Address"
                    FromRole="Contact" ToRole="Address" />
        </EntityType>
        <Association Name="Contact_Address">
          <End Role="Address"
               Type="ContactInformationModel.Address" Multiplicity="*" />
          <End Role="Contact"
               Type="ContactInformationModel.Contact" Multiplicity="*" />
        </Association>
      </Schema>
    </edmx:ConceptualModels>
    <!-- C-S mapping content -->
    <edmx:Mappings>
      <Mapping Space="C-S"
               xmlns="urn:schemas-microsoft-com:windows:storage:mapping:CS">
        <EntityContainerMapping StorageEntityContainer="dbo"
                 CdmEntityContainer="ContactInformationEntities">
          <EntitySetMapping Name="Addresses">
            <EntityTypeMapping
                 TypeName="IsTypeOf(ContactInformationModel.Address)">
              <MappingFragment StoreEntitySet="Address">
                <ScalarProperty Name="AddressID" ColumnName="AddressID" />
                <ScalarProperty Name="StreetAddress"
                              ColumnName="StreetAddress" />
                <ScalarProperty Name="City" ColumnName="City" />
              </MappingFragment>
            </EntityTypeMapping>
          </EntitySetMapping>
          <EntitySetMapping Name="Contacts">
            <EntityTypeMapping
              TypeName="IsTypeOf(ContactInformationModel.Contact)">
              <MappingFragment StoreEntitySet="Contact">
                <ScalarProperty Name="ContactID" ColumnName="ContactID" />
                <ScalarProperty Name="LastName" ColumnName="LastName" />
                <ScalarProperty Name="FirstName" ColumnName="FirstName" />
              </MappingFragment>
            </EntityTypeMapping>
          </EntitySetMapping>
          <AssociationSetMapping Name="Contact_Address"
             TypeName="ContactInformationModel.Contact_Address"
                        StoreEntitySet="Contact_Address">
            <EndProperty Name="Address">
              <ScalarProperty Name="AddressID" ColumnName="AddressID" />
            </EndProperty>
            <EndProperty Name="Contact">
              <ScalarProperty Name="ContactID" ColumnName="ContactID" />
            </EndProperty>
            <ModificationFunctionMapping>
              <DeleteFunction
         FunctionName="ContactInformationModel.Store.DeleteAddress">
                <EndProperty Name="Address">
                  <ScalarProperty Name="AddressID"
                                 ParameterName="AddressID"/>
                </EndProperty>
                <EndProperty Name="Contact">
                  <ScalarProperty Name="ContactID"
                                 ParameterName="ContactID"/>
                </EndProperty>
              </DeleteFunction>
              <InsertFunction
       FunctionName="ContactInformationModel.Store.SetAddress">
                <EndProperty Name="Address">
                  <ScalarProperty Name="AddressID"
                               ParameterName="AddressID"/>
                </EndProperty>
                <EndProperty Name="Contact">
                  <ScalarProperty Name="ContactID"
                               ParameterName="ContactID"/>
                </EndProperty>
              </InsertFunction>
            </ModificationFunctionMapping>
          </AssociationSetMapping>
        </EntityContainerMapping>
      </Mapping>
    </edmx:Mappings>
  </edmx:Runtime>
  <edmx:Designer xmlns="https://schemas.microsoft.com/ado/2007/06/edmx">
    <edmx:Connection>
      <DesignerInfoPropertySet>
        <DesignerProperty Name="MetadataArtifactProcessing" Value="EmbedInOutputAssembly" />
      </DesignerInfoPropertySet>
    </edmx:Connection>
    <edmx:Options>
      <DesignerInfoPropertySet>
        <DesignerProperty Name="ValidateOnBuild" Value="true" />
      </DesignerInfoPropertySet>
    </edmx:Options>
    <edmx:Diagrams >
<Diagram Name="ContactInformation">
<EntityTypeShape EntityType="ContactInformationModel.Address" PointX="0.75" PointY="0.875" Width="1.5" Height="1.787985026041667" IsExpanded="true" />
<EntityTypeShape EntityType="ContactInformationModel.Contact" PointX="3" PointY="0.875" Width="1.5" Height="1.787985026041667" IsExpanded="true" />
<AssociationConnector Association="ContactInformationModel.Contact_Address" ManuallyRouted="false">
<ConnectorPoint PointX="2.25" PointY="1.7689925130208335" />
<ConnectorPoint PointX="3" PointY="1.7689925130208335" />
</AssociationConnector>
</Diagram>
</edmx:Diagrams>
  </edmx:Designer>

另请参见

任务

如何：使用存储过程定义模型（实体框架）
如何：使用存储过程执行查询（实体框架）

概念

存储过程支持（实体框架）
ModificationFunctionMapping (AssociationSetMapping)
ModificationFunctionMapping (EntityTypeMapping)